Ear ventilation tube



FIG. 1 is a top view of an ear ventilation tube, showing my new design, the bottom view being identical;

FIG. 2 is a front elevational view thereof, the rear elevational view being identical;

FIG. 3 is a side view thereof; and,

FIG. 4 is a side elevational view taken from the opposite side of FIG. 3. 

The ornamental design for an ear ventilation tube, as shown. 